NO318932B1 - Device and method for passing a logging instrument through a deviation or horizontal borehole in a foundation formation - Google Patents
Device and method for passing a logging instrument through a deviation or horizontal borehole in a foundation formation Download PDFInfo
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- NO318932B1 NO318932B1 NO19984087A NO984087A NO318932B1 NO 318932 B1 NO318932 B1 NO 318932B1 NO 19984087 A NO19984087 A NO 19984087A NO 984087 A NO984087 A NO 984087A NO 318932 B1 NO318932 B1 NO 318932B1
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- cam
- borehole wall
- actuator
- borehole
- activating
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- 238000000034 method Methods 0.000 title claims description 12
- 230000015572 biosynthetic process Effects 0.000 title claims description 8
- 238000003780 insertion Methods 0.000 claims description 27
- 230000037431 insertion Effects 0.000 claims description 27
- 230000003213 activating effect Effects 0.000 claims 8
- 230000004913 activation Effects 0.000 claims 2
- 238000005755 formation reaction Methods 0.000 description 5
- 210000001520 comb Anatomy 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/18—Anchoring or feeding in the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/001—Self-propelling systems or apparatus, e.g. for moving tools within the horizontal portion of a borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/14—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Description
Bakgrunn for oppfinnelsen Background for the invention
Oppfinnelsen gjelder generelt sett et system for innføring av et loggeinstrument, og mer spesielt spesiell forstand en metode og apparat for innføring av loggeinstrument gjennom en grunnformasjon gjennomhullet av et vannrett eller sterkt deviert borehull. The invention generally relates to a system for introducing a logging instrument, and more specifically a method and apparatus for introducing a logging instrument through a base formation pierced by a horizontal or strongly deviated borehole.
For å kunne produsere hydrokarboner fra et reservoar på lønnsomt vis, er det blitt stadig mer vanlig å bore et hull som avviker fra den tradisjonelle loddrette retningen gjennom grunnformasjonen. Deviasjonen kan være resultatet av at hullet bores i enten en spiss vinkel eller i en vinkel som øker gradvis fra den vertikale aksen. Deviasjonen kan også oppstå ved å bore et hull som løper horisontalt fra den vertikale aksen. Det er blitt gjort mange forsøk i feltet på å logge formasjoner rundt slike horisontale eller deviert borehull ved hjelp av loggeinstrument som senkes ned i borehullet via en vaier og/eller en kabel. Plassering av slike redskaper i borehullet er som regel avhengig av tyngdekraften. Når hullet bores i høy nok vinkel, er imidlertid tyngdekraftens effekt på instrumentet og vaieren ikke tilstrekkelig til for å overvinne friksjonen instrumentet og vaieren utsettes for i den sterkt devierte delen av borehullet. Stive instrumenter, som f eks. borestreng og spiralrør, er blitt brukt til å føre loggeinstrumenter inn i vannrette og sterkt devierte borehull. I mange tilfeller kreves flere timers arbeid for å sette inn loggeinstru menter på denne måten. Videre begrenses rekkevidden for innføring ved hjelp av spiralrør p.g.a. spiralkrummingen. Derfor er det nå avgjørende å skaffe til veie en lønnsom og effektiv metode for innføring av loggeinstrumenter i den horisontale eller sterkt devierte delen av et borehull. In order to profitably produce hydrocarbons from a reservoir, it has become increasingly common to drill a hole that deviates from the traditional vertical direction through the underlying formation. The deviation can be the result of the hole being drilled at either an acute angle or at an angle that gradually increases from the vertical axis. The deviation can also occur by drilling a hole that runs horizontally from the vertical axis. Many attempts have been made in the field to log formations around such horizontal or deviated boreholes using a logging instrument that is lowered into the borehole via a wire and/or a cable. Placement of such tools in the borehole is usually dependent on gravity. When the hole is drilled at a high enough angle, however, the effect of gravity on the instrument and wire is not sufficient to overcome the friction the instrument and wire are exposed to in the highly deviated part of the borehole. Rigid instruments, such as drill string and spiral pipe, have been used to guide logging instruments into horizontal and highly deviated boreholes. In many cases, several hours of work are required to insert logging instruments in this way. Furthermore, the range for insertion using spiral tubes is limited due to the spiral curvature. Therefore, it is now crucial to provide a profitable and efficient method for introducing logging instruments into the horizontal or highly deviated part of a borehole.
US 5.184.676 beskriver en selvdrevet fremdriftsanordning for transport av verktøy i en brønn. I en utførelse omfatter anordningen kammer med tilkoblet aktuatorsystem. Imidlertid fremgår ikke en fremdriftsanordning med en kam med en buet kontaktflate for inngrep med borehullsveggen. US 5,184,676 describes a self-propelled propulsion device for transporting tools in a well. In one embodiment, the device comprises a chamber with a connected actuator system. However, a propulsion device with a cam with a curved contact surface for engagement with the borehole wall is not disclosed.
Oppsummering av oppfinnelsen Summary of the invention
De ovennevnte ulempene ved tidligere patenter kan unngås ved hjelp av oppfinnelsen av apparat og metode til innføring av minst et loggeinstrument gjennom en grunnformasjon gjennomhullet av et horisontalt eller sterkt deviert borehull. Innføringssystemet består av et par krumme hevarmer som kan dreies rundt støtten de er festet til, en anordning som spenner fast kammens buete overflate ved kontakt med borehullsveggen, og aktuatorer som er operativt koplet til hver hevarm. Et loggeinstrument er festet til innføringssystemet. Når en av aktuatorene er aktivert i en første retning, flyttes kammen som er koplet til den aktiverte aktuatoren forover i rett linje, og kammens buete overflate glir langs borehullsveggen. Når en av aktuatorene blir aktivert i en annen retning, trekker den aktiverte aktuatoren den tilkoplede kammen bakover, slik at spenningsanordningen låser kammens buete overflate fast mot borehullsveggen. Når kammen er kilt på plass vil enhver videre bevegelse av aktuatoren skyve både innføringssystemet og loggeinstrumentet videre langs det sterkt devierte eller horisontale borehullet. The above-mentioned disadvantages of previous patents can be avoided by means of the invention of an apparatus and method for introducing at least one logging instrument through a basic formation pierced by a horizontal or strongly deviated borehole. The insertion system consists of a pair of curved lift arms that can be rotated about the support to which they are attached, a device that clamps the cam's curved surface upon contact with the borehole wall, and actuators that are operatively connected to each lift arm. A logging instrument is attached to the insertion system. When one of the actuators is activated in a first direction, the cam coupled to the activated actuator is moved forward in a straight line, and the curved surface of the cam slides along the borehole wall. When one of the actuators is activated in a different direction, the activated actuator pulls the connected cam backwards, so that the tension device locks the curved surface of the cam firmly against the borehole wall. Once the cam is wedged in place, any further movement of the actuator will push both the insertion system and the logging instrument further along the severely deviated or horizontal borehole.
Metoden for innføring av minst et loggeinstrument gjennom en grunnformasjon som er gjennomhullet av et horisontalt eller sterkt deviert borehull, omfatter et innføringssystem som består av et par buete hevarmer som er festet slik at de kan dreies rundt et støtteledd, en anordning som spenner fast den buete overflaten av hver kam ved kontakt med borehullsveggen, og aktuatorer som er operativt koplet til hver hevarm. Minst ett loggeinstrument festes til innføringssystemet. The method of introducing at least one logging instrument through a foundation formation pierced by a horizontal or highly deviated borehole comprises an introduction system consisting of a pair of curved lift arms which are rotatably attached about a support link, a device which clamps the curved the surface of each cam in contact with the borehole wall, and actuators operatively connected to each lift arm. At least one logging instrument is attached to the introduction system.
Ideelt sett skal begge kammene betjenes samtidig. Aktuatoren til den første kammen aktiveres for å flytte den første kammen forover. Samtidig aktiveres aktuatoren til den andre kammen, slik at den andre kammen trekkes tilbake, og dermed kiler fast den buete delen mot borehullsveggen, noe som driver inn-føringssystemet og loggeinstrumentet forover. De samme handlingene gjentas i omvendt rekkefølge ved at aktuatoren til den første kammen aktiveres for å trekke den første kammen tilbake, og dermed kiler fast den buete delen mot borehullsveggen, noe som igjen driver innføringssystemet og loggeinstrumentet forover, mens aktuatoren til den andre kammen aktiveres for å flytte den andre kammen forover. Disse trinnene skal gjentas helt til loggeinstrumentet er anbrakt i den forhåndsbestemte posisjonen. Ideally, both combs should be operated at the same time. The actuator of the first cam is activated to move the first cam forward. At the same time, the actuator of the second cam is activated, so that the second cam is retracted, thus wedging the curved part against the borehole wall, which drives the introduction system and the logging instrument forward. The same operations are repeated in reverse order with the actuator of the first cam actuated to retract the first cam, thus wedging the curved portion against the borehole wall, which in turn drives the insertion system and logging instrument forward, while the actuator of the second cam is actuated to to move the other cam forward. These steps shall be repeated until the logging instrument is placed in the predetermined position.
I en annen utgave av oppfinnelsen betjenes begge kammene samtidig i begynnelsen. Aktuatoren på begge kammene aktiveres samtidig for å trekke begge kammene tilbake, slik at de buete delene kiles fast mot borehullsveggen og driver innføringssystemet og loggeinstrumentet forover. Deretter skal aktuatorene aktiveres etter hverandre, slik at hver kam flyttes forover. Disse trinnene skal gjentas helt til loggeinstrumentet er anbrakt i den forhåndsbestemte posisjonen. In another version of the invention, both combs are operated simultaneously at the beginning. The actuator on both cams is activated simultaneously to retract both cams, so that the curved parts are wedged against the borehole wall and drive the insertion system and logging instrument forward. The actuators must then be activated one after the other, so that each cam is moved forward. These steps shall be repeated until the logging instrument is placed in the predetermined position.
I en tredje utgave av oppfinnelsen går den ene aktuatoren fram og tilbake, mens den andre aktuatoren står stille. Aktuatoren som er i bevegelse aktiveres for å trekke kammen bakover, slik at den buete delen kiles fast mot borehullsveggen og driver innføringssystemet og loggeinstrumentet forover. Aktuatoren som er i bevegelse, skal deretter aktiveres for å flytte kammen forover. Disse trinnene skal gjentas helt til loggeinstrumentet er anbrakt i den forhåndsbestemte posisjonen. In a third version of the invention, one actuator moves back and forth, while the other actuator stands still. The actuator in motion is activated to pull the cam rearward, so that the curved portion is wedged against the borehole wall and drives the insertion system and logging instrument forward. The actuator which is in motion must then be activated to move the cam forward. These steps shall be repeated until the logging instrument is placed in the predetermined position.
Kort beskrivelse av tegningene Brief description of the drawings
Fordelene ved denne oppfinnelsen vil gå klart fram fra den følgende beskrivelsen av de vedlagte tegningene. Det gjøres oppmerksom på at tegningene bare skal forstås som illustrasjoner, ikke som en definisjon av oppfinnelsen. The advantages of this invention will be clear from the following description of the attached drawings. Please note that the drawings should only be understood as illustrations, not as a definition of the invention.
M.h.t. tegningene: Regarding the drawings:
Fig. 1 viser en verktøystreng i et deviert borehull; Fig. 2 viser oppfinnelsens innføringssystem; Fig. 3a - 3b viser innføringssystemet inni borehull med henholdsvis liten og stor diameter; og Fig. 4a-4c viser posisjon, hastighet og kraft i forhold til tid i forbindelse med kontinuerlig bevegelse av et innføringssystem med et par hevarmer. Fig. 1 shows a tool string in a deviated borehole; Fig. 2 shows the introduction system of the invention; Fig. 3a - 3b show the insertion system inside boreholes with small and large diameter respectively; and Fig. 4a-4c show position, speed and force in relation to time in connection with continuous movement of an insertion system with a pair of lever arms.
Detaljert beskrivelse av foretrukket utgave Detailed description of preferred edition
Fig. 1 viser skjematisk verktøystrengen 10 i et deviert borehull 12. Borehullet 12 er vanligvis foret med stålbekledning sementert på plass mot berggrunnen, og kan videre inneholde produksjonsrør. Oppfinnelsen kan imidlertid også brukes i et åpent brønnhull. Verktøystrengen 10 omfatter minst et loggeinstrument 14 festet på høvelig vis til et innføringssystem 16. Verktøystrengen 10 har også elektronikk som gir kraft til innføringssystemet 16. Verktøystrengen 10 henger i en armert kabel 18. En vinsj (ikke vist her) plassert på overflaten brukes til å heve og senke verktøystrengen 10 i den vertikale delen av borehullet 12. 1 den foretrukne utgaven skal loggeinstrumentet 14 plasseres på den fjerntliggende enden av verktøystrengen 10 og innføringssystemet 16 plasseres på den proksimale enden av instrumentstrengen 10. Et annet alternativ er å plassere loggeinstrumentet 14 på den proksimale enden av verktøystrengen 10, mens innføringssystemet 16 plasseres på den fjertliggende enden av verktøystrengen 10. Fig. 1 schematically shows the tool string 10 in a deviated borehole 12. The borehole 12 is usually lined with steel lining cemented in place against the bedrock, and may further contain production pipe. However, the invention can also be used in an open wellbore. The tool string 10 includes at least one logging instrument 14 suitably attached to an insertion system 16. The tool string 10 also has electronics that provide power to the insertion system 16. The tool string 10 hangs from an armored cable 18. A winch (not shown here) placed on the surface is used to raise and lower the tool string 10 in the vertical portion of the borehole 12. In the preferred embodiment, the logging instrument 14 is placed on the distal end of the tool string 10 and the insertion system 16 is placed on the proximal end of the instrument string 10. Another alternative is to place the logging instrument 14 on the proximal end of the tool string 10, while the insertion system 16 is placed on the distal end of the tool string 10.
I Fig. 2 omfatter innføringssystemet 16 en aktuator 24 til bruk for lineær forflytning av kammen 20, som er montert slik at den dreier rundt et støtteledd 22. Kammen 20 er laget i et solid materiale som er motstandsdyktig mot rust og slitasje, som f.eks. rustfritt stål. Kammen 20 består av to ledd som ligger mot hverandre, 26a og 26b, som begge har buet overflate og en anordning som spenner fast den buete delen av kammen ved direkte kontakt med veggen av borehullet 12. Ideelt sett skal spenningsanordningen bestå av en fjær 28 plassert mellom hvert ledd, 26a og 26b, og støtteleddet 22. Fjæren 28 kan være en torsjonsfjær, en strekkfjær, eller en trykkfjær. En alternativ utgave av oppfinnelsen består i å plassere fjæren 28 mellom leddene 26a og 26b for å spenne de to motsatte leddene mot hverandre og i kontakt med veggen av borehullet 12. Andre måter å spenne kammen 20 mot borehullet 12, herunder ved hjelp av et elektromekanisk eller hydraulisk system, ligger også innenfor denne oppfinnelsens utstrekning. For ytterligere forbedring av kontakten mellom kammen 20 og borehullet 12, kan kammen 20 utstyres med pigger eller partikler 29 fastspent til den buete overflaten. Piggene eller partiklene 29 er laget i et hardt materiale med høy slitasjebestandighet, som f.eks. wolframkarbid. In Fig. 2, the insertion system 16 comprises an actuator 24 for use for linear movement of the cam 20, which is mounted so that it rotates around a support joint 22. The cam 20 is made of a solid material that is resistant to rust and wear, such as e.g. stainless steel. The comb 20 consists of two joints that lie opposite each other, 26a and 26b, both of which have a curved surface and a device that clamps the curved part of the comb in direct contact with the wall of the borehole 12. Ideally, the clamping device should consist of a spring 28 placed between each link, 26a and 26b, and the support link 22. The spring 28 can be a torsion spring, a tension spring, or a compression spring. An alternative version of the invention consists in placing the spring 28 between the joints 26a and 26b to tension the two opposite joints against each other and in contact with the wall of the borehole 12. Other ways of tensioning the cam 20 against the borehole 12, including by means of an electromechanical or hydraulic system, is also within the scope of this invention. To further improve the contact between the comb 20 and the borehole 12, the comb 20 can be equipped with spikes or particles 29 clamped to the curved surface. The spikes or particles 29 are made of a hard material with high wear resistance, such as e.g. tungsten carbide.
Fig. 2 viser videre at aktuator 24 er operativt koplet til kam 20. Aktuator 24 omfatter en motor 30 for roterende skrue 32. Aktuatoren 24 kan videre omfatte en reduksjonsgirkasse 34 plassert mellom motor 30 og skrue 32. Aktuator 24 kan eventuelt omfatte en annen anordning for lineær flytting av kammen 20, inkludert, men ikke begrenset til, et hydraulisk stempel drevet av en motordrevet hydraulisk pumpe. Når motoren 30 roteres i en retning, flytter skruen 32 kammen 20 lineært forover, og den buete delen glir langs borehullsveggen. Når motoren 30 dreies i motsatt retning, trekker skruen 32 kammen 20 bakover og låser den buete delen mot veggen av borehullet 12 og driver innføringssystemet og loggeinstrumentet forover. Fig. 2 further shows that actuator 24 is operatively connected to cam 20. Actuator 24 comprises a motor 30 for rotating screw 32. Actuator 24 may further comprise a reduction gearbox 34 placed between motor 30 and screw 32. Actuator 24 may optionally comprise another device for linear movement of the cam 20, including, but not limited to, a hydraulic piston driven by a motor driven hydraulic pump. When the motor 30 is rotated in one direction, the screw 32 moves the cam 20 linearly forward, and the curved part slides along the borehole wall. When the motor 30 is rotated in the opposite direction, the screw 32 pulls the cam 20 backwards and locks the curved part against the wall of the borehole 12 and drives the insertion system and the logging instrument forward.
Innføringssystemet 16 låser seg fast til eller glir tett opp mot borehullsveggen i et borehull 12 med varierende diameter. Figurene 3a- 3b viser innføringssystemet 16 i et borehull 12 med liten og stor diameter. Kontaktvinkelen, 0, ligger mellom et punkt hvor en buet del av kammen 20 er i kontakt med borehullsveggen og en linje trukket gjennom omdreiningspunktet 40 og perpendikulært på borehullsveggen 12. Kontaktvinkelen som kreves for å låse kammen mot borehullsveggen er avhengig av friksjonen mellom kammen 20 og borehullsveggen 12. Tangenten til kontaktvinkelen, 0, må være mindre enn koeffisienten av friksjon mellom kam og borehullsvegg 12, slik at aktuator 24 låser kam 20 mot borehullsveggen. Kontaktvinkelen forblir konstant mens kammen 20 dreies innover eller utover for tilpasning til den varierende diameteren i et borehull av vekslende vidde. The introduction system 16 locks onto or slides tightly against the borehole wall in a borehole 12 of varying diameter. Figures 3a-3b show the insertion system 16 in a borehole 12 with a small and large diameter. The contact angle, 0, lies between a point where a curved part of the cam 20 is in contact with the borehole wall and a line drawn through the pivot point 40 and perpendicular to the borehole wall 12. The contact angle required to lock the cam against the borehole wall is dependent on the friction between the cam 20 and the borehole wall 12. The tangent to the contact angle, 0, must be smaller than the coefficient of friction between cam and borehole wall 12, so that actuator 24 locks cam 20 against the borehole wall. The contact angle remains constant while cam 20 is rotated inward or outward to accommodate the varying diameter in a borehole of varying width.
I foretrukket utgave består innføringssystemet 16 av et aktuatorpar 24, 24' til bruk for lineær flytting av kammene 20, 20', som er festet slik at de kan dreies rundt et støtteledd 22, 22'. Når en hevarm, 20 eller 20', blir skjøvet forover, påføres innføringssystemet 16 og loggeinstrumentet 14 en reaksjonskraft, noe som normalt får innføringssystemet 16 og loggeinstrumentet 14 til å bevege seg bakover. På samme måte får spenning i vaieren 18 som trekkes inn i en sterkt deviert eller horisontal seksjon av borehullet 12 normalt innføringssystemet 16 og loggeinstrumentet 14 til å flytte seg bakover. Den andre kammen, 20 eller 20', som er kilt opp mot borehullsveggen 12 og dermed ikke glir forover, forhindrer enhver baklengs bevegelse av innføringssystemet 16 og loggeinstrumentet 14. In the preferred version, the introduction system 16 consists of a pair of actuators 24, 24' for use in linear movement of the cams 20, 20', which are attached so that they can be rotated around a support joint 22, 22'. When a lift arm, 20 or 20', is pushed forward, a reaction force is applied to the insertion system 16 and the logging instrument 14, which normally causes the insertion system 16 and the logging instrument 14 to move backward. Likewise, tension in the wire 18 that is pulled into a highly deviated or horizontal section of the borehole 12 normally causes the insertion system 16 and the logging instrument 14 to move backward. The second cam, 20 or 20', which is wedged against the borehole wall 12 and thus does not slide forward, prevents any backward movement of the insertion system 16 and the logging instrument 14.
Figurene 4a-4c viser posisjon, hastighet, og kraft i forhold til tid for kontinuerlig bevegelse av det foretrukne innføringssystemet 16. 1 utgangsposisjon, ved t=0, er den første aktuatoren 24 helt utstrakt til en lengde som omtrent svarer til lengden på skruen 32. Videre, i utgangsposisjon, er den andre aktuatoren 24' helt tilbaketrukket. For å føre inn loggeinstrumentet 14, roterer den første motoren 30 i en retning og trekker tilbake skruen 32, og dette trekker kammen 20 tilbake og låser den buete delen mot borehullsveggen 12 og driver innføringssystemet og loggeinstrumentet forover. Samtidig dreies den andre motoren 30' i en retning og skruen 32' flytter lineært kammen 20' forover, og den buete delen presses mot og sklir langs borehullsveggen 12. Disse handlingene skal deretter gjentas i omvendt rekkefølge, slik at den første motoren 30 roterer i motsatt retning og skruen 32 flytter kammen 20 lineært' forover, slik at den buete delen presses mot og sklir langs borehullsveggen. Samtidig dreies den andre motoren 30' i motsatt retning og trekker tilbake skruen 32 som trekker kammen 20' tilbake og låser den buete delen mot borehullsveggen og driver innførings-systemet og loggeinstrumentet forover. Figurene 4b-4cviser at nettobevegelsen til innføringssystemet 16 og loggeinstrumentet 14 er kontinuerlig og hastigheten er omvendt proporsjonal til trekkinnsatsen, noe som gjenspeiler evnen til å overføre en begrenset mengde elektrisk kraft via vaieren 18. Figures 4a-4c show position, speed, and force versus time for continuous movement of the preferred insertion system 16. 1 initial position, at t=0, the first actuator 24 is fully extended to a length approximately corresponding to the length of the screw 32 Furthermore, in the initial position, the second actuator 24' is fully retracted. To insert the logging instrument 14, the first motor 30 rotates in one direction and retracts the screw 32, and this retracts the cam 20 and locks the curved portion against the borehole wall 12 and drives the insertion system and the logging instrument forward. At the same time, the second motor 30' is rotated in one direction and the screw 32' linearly moves the cam 20' forward, and the curved part is pressed against and slides along the borehole wall 12. These actions must then be repeated in reverse order, so that the first motor 30 rotates in opposite direction and the screw 32 moves the cam 20 linearly forward, so that the curved part is pressed against and slides along the borehole wall. At the same time, the second motor 30' is rotated in the opposite direction and retracts the screw 32 which retracts the cam 20' and locks the curved part against the borehole wall and drives the introduction system and the logging instrument forward. Figures 4b-4c show that the net movement of the insertion system 16 and logging instrument 14 is continuous and the speed is inversely proportional to the pulling effort, reflecting the ability to transfer a limited amount of electrical power via the wire 18.
I en annen utgave av oppfinnelsen blir begge kammene 20, 20' først brukt samtidig, deretter den ene etter den andre. Aktuatoren 24, 24' til hver kam 20, 20' aktiveres samtidig for å trekke hver kam 20, 20' tilbake, slik at de buete delene kiles fast mot borehullsveggen 12 og driver innføringssystemet 16 og loggeinstrumentet 14 forover. Deretter aktiveres den ene aktuatorene 24 etter den andre 24', slik at hver kam 20, 20' flyttes forover. Disse trinnene skal gjentas helt til loggeinstrumentet 14 er anbrakt i den forhåndsbestemte posisjonen. In another version of the invention, both combs 20, 20' are first used simultaneously, then one after the other. The actuator 24, 24' of each cam 20, 20' is simultaneously activated to retract each cam 20, 20' so that the curved parts are wedged firmly against the borehole wall 12 and drive the insertion system 16 and the logging instrument 14 forward. Then one of the actuators 24 is activated after the other 24', so that each cam 20, 20' is moved forward. These steps must be repeated until the logging instrument 14 is placed in the predetermined position.
I en tredje utgave av oppfinnelsen går en aktuator, 24 eller 24', fram og tilbake, mens den andre aktuatoren, 24 eller 24', står stille. Den bevegelige aktuatoren, 24 eller 24', aktiveres for å flytte kammen, 20, 20', tilbake, slik at den buete delen låses mot borehullsveggen 12 og driver innføringssystemet 16 og loggeinstrumentet 14 forover. Den bevegelige aktuatoren, 24 eller 24', skal deretter aktiveres for å flytte kammen 20 eller 20' forover. Disse trinnene skal gjentas helt til loggeinstrumentet er anbrakt i den forhåndsbestemte posisjonen. In a third version of the invention, one actuator, 24 or 24', moves back and forth, while the other actuator, 24 or 24', stands still. The movable actuator, 24 or 24', is activated to move the cam, 20, 20', back so that the curved portion is locked against the borehole wall 12 and drives the insertion system 16 and the logging instrument 14 forward. The movable actuator, 24 or 24', should then be actuated to move the cam 20 or 20' forward. These steps shall be repeated until the logging instrument is placed in the predetermined position.
Den foregående beskrivelsen av den foretrukne og alternative utgaver for oppfinnelsen er her blitt presentert i illustrasjonsøyemed. Beskrivelsen er ikke ment å være fullstendig, og begrenser heller ikke oppfinnelsen tii de bruksmåtene som er nøyaktig anvist her. Det er klart at fagfolk kan komme på mange flere modifikasjoner og variasjonsmuligheter. Disse bruksmåtene ble valgt og beskrevet for på best mulig vis å forklare prinsippene for oppfinnelsen og dens praktiske anvendelse, slik at andre fagfolk skal kunne forstå oppfinnelsen og dens forskjellige utgaver med egnede modifikasjoner for den spesielle funksjonen den blir tiltenkt. Hensikten er at oppfinnelsens omfang skal defineres av de medfølgende kravene og deres ekvivalenter. The preceding description of the preferred and alternative versions of the invention has been presented here for illustrative purposes. The description is not intended to be complete, nor does it limit the invention to the uses precisely indicated herein. It is clear that professionals can come up with many more modifications and variations. These modes of use were chosen and described in order to explain in the best possible way the principles of the invention and its practical application, so that other professionals will be able to understand the invention and its various editions with suitable modifications for the particular function for which it is intended. The intention is that the scope of the invention should be defined by the accompanying claims and their equivalents.
Claims (12)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/924,672 US5954131A (en) | 1997-09-05 | 1997-09-05 | Method and apparatus for conveying a logging tool through an earth formation |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO984087D0 NO984087D0 (en) | 1998-09-04 |
| NO984087L NO984087L (en) | 1999-03-08 |
| NO318932B1 true NO318932B1 (en) | 2005-05-23 |
Family
ID=25450525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19984087A NO318932B1 (en) | 1997-09-05 | 1998-09-04 | Device and method for passing a logging instrument through a deviation or horizontal borehole in a foundation formation |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US5954131A (en) |
| EP (1) | EP0900914B1 (en) |
| CN (1) | CN1210934A (en) |
| AU (1) | AU730192B2 (en) |
| CA (1) | CA2245098C (en) |
| CO (1) | CO4840539A1 (en) |
| DE (1) | DE69815609D1 (en) |
| DK (1) | DK0900914T3 (en) |
| EG (1) | EG21500A (en) |
| ID (1) | ID22104A (en) |
| NO (1) | NO318932B1 (en) |
| SA (1) | SA98190471B1 (en) |
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- 1997-09-05 US US08/924,672 patent/US5954131A/en not_active Expired - Lifetime
-
1998
- 1998-08-11 CO CO98045782A patent/CO4840539A1/en unknown
- 1998-08-17 DE DE69815609T patent/DE69815609D1/en not_active Expired - Lifetime
- 1998-08-17 EP EP98202742A patent/EP0900914B1/en not_active Expired - Lifetime
- 1998-08-17 CA CA002245098A patent/CA2245098C/en not_active Expired - Lifetime
- 1998-08-17 DK DK98202742T patent/DK0900914T3/en active
- 1998-08-27 AU AU81889/98A patent/AU730192B2/en not_active Expired
- 1998-08-30 SA SA98190471A patent/SA98190471B1/en unknown
- 1998-09-01 ID IDP981186A patent/ID22104A/en unknown
- 1998-09-03 EG EG105798A patent/EG21500A/en active
- 1998-09-04 NO NO19984087A patent/NO318932B1/en not_active IP Right Cessation
- 1998-09-04 CN CN98118896A patent/CN1210934A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DK0900914T3 (en) | 2003-10-13 |
| SA98190471B1 (en) | 2006-06-21 |
| EP0900914B1 (en) | 2003-06-18 |
| EP0900914A3 (en) | 1999-09-01 |
| NO984087D0 (en) | 1998-09-04 |
| AU730192B2 (en) | 2001-03-01 |
| AU8188998A (en) | 1999-03-18 |
| NO984087L (en) | 1999-03-08 |
| CO4840539A1 (en) | 1999-09-27 |
| US5954131A (en) | 1999-09-21 |
| CA2245098A1 (en) | 1999-03-05 |
| CN1210934A (en) | 1999-03-17 |
| EP0900914A2 (en) | 1999-03-10 |
| EG21500A (en) | 2001-11-28 |
| DE69815609D1 (en) | 2003-07-24 |
| ID22104A (en) | 1999-09-09 |
| CA2245098C (en) | 2002-06-04 |
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| MK1K | Patent expired |